I know 3 ESFPs? It can be hard to ferret them out. Mostly because they are very open to me discussing very ENFP ideas. Even if they don't quite get what I'm talking about, they're amused by the Ne and like the personal connection that they are interested and will smile and nod and join in. They tend to be a little bit more energetic partiers than ENFPs. The ones I do know have 'quiet interests' but really do live for the weekend, for burning man, for biking with friends, the club on Saturday. While ENFPs love to do that stuff, too, that's not our primary focus. We tend to me more enthusiasts with a party side and ESFPs tend to be partiers with and enthusiast side.
The ESFPs I've met are highly aesthetic, but don't seem to connect with the grittier side of life. Tend to love beauty in the form of bright colors, natural shapes, breeziness. One friend of mine didn't want to plecostomus in her fish tank to clean up algae because it is ugly, most ENFPs I know would find that ugliness endearing.
I think you'll find the Se and Ne difference shows the more time you spend with them, their almost super-human (to Ne) sensitivity to smells, tastes, and sounds and colors directly funneled to their judgement function Fi. That is truly their world.